There's plenty of evidence for an old earth. Zero evidence for a young earth. One is science. One is religion.
The Czar of Everything has spoken and has declared his opinions are facts again!
Here's a hint if you don't get that, BL: It's your OPINION that one is science and the other is religion.
Both can, in fact, be science, but since you are the Czar of Everything and have decreed otherwise, I guess that's supposed to settle everything.